Energy-Efficient Robust Control for Direct Drive and Energy Recuperation Hydraulic Servo System

Table 4

Parameter configurations for the hydraulic accumulator.

Scheme	Control variables			Servo variables
	Original
Set 1		Invariable	Invariable			Invariable
Set 2	Invariable		Invariable	Invariable		Invariable
Set 3	Invariable	Invariable		Invariable
Set 4	Invariable	Invariable		Invariable